Magento Block not rendering/Instantiating in IE10 only but works in other browsers

[rahulpragma]

Strange Issue : Magento Block not rendering/Instantiating only in IE10 but works in all other browsers and IE versions

Magento Block not rendering/Instantiating only in IE10 but works in all other browsers and IE versions

I am using a extension 1 step checkout for magento. When user add a product in shopping cart, it redirect user directly to Checkout page and extension's checkout page is renders fine in all browsers including Chrome, Firefox, IE7, IE8, IE9.
It looks like this: http://screencast.com/t/7NPPRF5jdJPj

But when I check it in IE10, it shows me old magento default checkout page: http://screencast.com/t/xSkEUSv2D

No cache issue. Here is url: devappliances4y ou.com.au/checkout/onepage/ (you need to add a product to see checkout form)
Can anybody help me with this?

Thank you in advance!

[Atli]

Are you getting any JavaScript errors in IE10?

It seems unlikely that the browser version would affect something like that. The Magento Block is being generated server-side, is it not? - Unless the extension is deliberately creating different content for different IE versions. Have you checked if there is some sort of IE version restriction on the extension?